The MBS DE6090MR Manual Restraint is similar to the MBS DE6190AR Automatic Vehicle Restraint System in functionality. The only difference is that the blocking arm set for the back wheels of the trailer is used and released manually.
The manual system comes with a two-way interlocking system. It doesn't allow the dock doors to open before the restraint system is in place. The blocking arm is only retractable after the door is closed.
MBS DE6090MR Manual Vehicle Restraint System